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Issue – Emulex Nic in Windows Server 2012 R2 with VMQ still does not work

Posted by Mikael Nystrom on September 3, 2014

Today, working at a customer deploying Hyper-V hosts with Emulex CNA1100 we run into issues (did not surprise me, since the issue have been around for more than a year, but I still try and test to see if it ever gets better).

The issue is that VMQ still needs to be disabled on every Emulex NIC. That bad thing is that the issue has been around for a very, very long time. It took a very long time for the vendor to acknowledge the issue and now they state that there is a solution soon to be released. I really hope that, but I have heard it before…

Read more here:

http://blogs.emulex.com/implementers/2014/06/19/microsoft-windows-20122012-r2-hyper-vms-losing-network-connectivity-workaround/

My simple recommendation is to disable VMQ in all Emulex Network adapters if they are installed in Windows Server 2012 R2 or buy something that works and use VMQ.

When they release something that actually works I will remove this blog post.

/m

5 Responses to “Issue – Emulex Nic in Windows Server 2012 R2 with VMQ still does not work”

  1. jones1337 said

    So what does work? :) It seems like people are reporting the same thing for Intel and Broadcom NICs, but maybe I’m wrong?

  2. Larry Lambert said

    The August 4th fix resolved the issue for us so far, 3 weeks with no disconnects.

  3. Get-NetAdapterVmq should give the VMQ configuration. If the number of VMQ Queus are Zero you have network adapter that does support VMQ but has zero number of Ques. That is true for Emulex nic’s in HP blades. Only the first 2 LOMs have support for VMQ (but the number is to small to make any good), all the other NICs have Zero number og Queus

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